Masthead error in SAP CE7.2
I am using CE7.2, the development portal masthead file is corrupted it is showing error. so, i deployed the quality portal masthead in development portal, It is working fine for all the users including administrator but it displays error for one particular user, i have cleared navigation cache, deleted history from browser and tried from different machine, but it is displaying error for that particular user. I don't understand what the problem is? Is there any particular roles for masthead or anything else?
Please guide me, thanks in advance,